The Corrosion Resistance of Alloys to Salt Brine Attack

1983 ◽  
Vol 26 ◽  
Author(s):  
V. Mirschinka ◽  
R. Odoj
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Stress Corrosion ◽  
Rupture Strength ◽  
High Surface ◽  
Metal Alloys ◽  
Creep Rupture Strength ◽  
Corrosion Attack ◽  
Surface Corrosion ◽  
Salt Brine

ABSTRACTSix metal alloys were subjected to surface and creeprupture stress corrosion tests using NaCl- and Q-brines. Low-allou materials do not seem to be suitable as a barrier against salt brine attack due to the high surface corrosion rate. Creep-rupture strength corrosion was insignificant for the tested materials. Hastelloy C 4 showed no corrosion attack by salt brines in autoclaves at 200°C and 100 bar during 8 months of testing. Bentonite was shown to reduce the corrosion attack considerably.

IN-738

Alloy Digest ◽  
1972 ◽  
Vol 21 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Chromium Content ◽  
Rupture Strength ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Creep Rupture Strength ◽  
Temperature Performance ◽  
Nickel Base

Abstract IN-738 is a vacuum cast, precipitation hardened, nickel-base alloy possessing excellent high temperature creep-rupture strength combined with hot corrosion resistance superior to that of many present day high-strength superalloys of lower chromium content. This datasheet provides information on composition, physical properties, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Ni-172. Producer or source: Licensees of International Nickel.

scholarly journals Temperature-Related Corrosion Resistance of AISI 1010 Carbon Steel in Sulfolane

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2563 ◽  
Author(s):  
Julian Kubisztal ◽  
Bożena Łosiewicz ◽  
Paulina Dybal ◽  
Violetta Kozik ◽  
Andrzej Bak
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Electrochemical Techniques ◽  
Protective Layer ◽  
Corrosion Damage ◽  
Product Layer ◽  
General Corrosion ◽  
Industrial Systems ◽  
Surface Corrosion ◽  
Severe Impairment

Sulfolane-induced corrosion can lead to severe impairment in industrial systems. Therefore, determination of solvent corrosivity is valid. Under standard conditions, pure sulfolane is considered to be thermally stable and chemically inert, hence non-aggressive towards carbon/stainless steel. Unfortunately, the sulfolane-evoked corrosion of the industrial installations is observed for sulfolane-based systems polluted by small quantities of oxygen, water and some oxidizing agents. Moreover, sulfolane decomposition with formation of corrosive (by-)products can be escalated by some process parameters, e.g., temperature. The main objective of this study was to determine the corrosion resistance of AISI 1010 steel immersed in sulfolane at temperatures ranging from 25 to 230 °C. Evaluation of the corrosion damage was carried out using electrochemical techniques and scanning probe/electron microscopy, respectively. The general corrosion tendency, corrosion rate and surface corrosion degree were taken into account as well. It was noticed that the corrosion rate linearly increases with the enhancement of sulfolane temperature. Moreover, the interfacial reaction of steel with sulfolane resulted in the formation of corrosion product layer, which is a physical barrier between the corrosive environment and steel improving corrosion resistance of the latter. In fact, the increment of the sulfolane temperature caused a gradual breakdown of the protective layer and the increase in the corrosion degree of the investigated steel. Finally, it was found that the corrosion degree doubles approximately every 42 °C.

Corrosion Resistance of 9 - 15% Cr ODS Steels and its Comparison with Austenitic Stainless Steel

2013 ◽  
Vol 794 ◽  
pp. 575-582 ◽  
Author(s):  
S. Ningshen ◽  
M. Sakairi ◽  
K. Sukuki ◽  
S. Ukai
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Passive Film ◽  
Intergranular Corrosion ◽  
High Performance ◽  
304L Stainless Steel ◽  
Corrosion Attack ◽  
Ods Steel ◽  
Ods Steels

An oxide dispersion strengthened steels are one of the most promising high temperatures, and high performance advanced structural material being developed for future fast reactors and high-temperature Generation IV reactors. In the present work, the corrosion resistance and its correlation with the passive film compositions of 11% Cr F/M and 9-15% Cr (with Zr or Hf) ODS steels is examined and compared with AISI type 304L stainless steel in boiling 60 - 62% (~13 M) HNO3. The corrosion rate measured in 62% HNO3 for 240 h of 11% Cr F/M, 9% Cr and 15% Cr (Zr) ODS steels show high corrosion rate. On the other hand, low corrosion rate was observed in 304L stainless steel (0. 21 to 23 mm y-1). However, severe intergranular corrosion attack was revealed in type 304L SS after 240 h exposure, but none in ODS steels. Such an intergranular corrosion attack seen in type 304L stainless steel is undesirable. On the contrary, low corrosion rate (0.04 0.15 mm y-1) of 15% Cr (Hf) ODS steel in 3 M, 6 M and 9 M HNO3, comparable to that of type 304L stainless steel was observed. The improved corrosion resistance of 15% Cr (Hf) ODS steel was attributed to enrich (20 at. %) and protective Al2O3 layer formation in addition to Cr2O3 in the passive film.

Corrosion Behavior of WC-Co and WC-Ni in 3.5% NaCl at Increasing Temperature

2014 ◽  
Vol 660 ◽  
pp. 135-139 ◽  
Author(s):  
A. Ismail ◽  
Norhaslina Abd Aziz
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Tungsten Carbide ◽  
Surface Structure ◽  
Tungsten Carbides ◽  
Corrosion Performance ◽  
Corrosion Attack ◽  
Different Temperatures ◽  
Increasing Temperature ◽  
Nickel Tungsten

Tungsten carbides (WC) are widely used as wear resistant components such as seal, valves, rings, nozzle and bearings. But in some processing operations, the environment necessarily includes severe corrosion or extremes of temperatures. In paper reveal, the corrosion performance of commercial cobalt tungsten carbide (WC-6%Co) and nickel tungsten carbide (WC-9%Ni) in seawater with 3.5% salinity. The experiment was performed in four different temperatures (20°C, 40°C, 60°C and 80°C) and the surface structure by corrosion attack was reveal under SEM. TheIcorrvalue of WC-9%Ni is lower than WC-6%Co, elucidate that WC-9%Ni is better in corrosion resistance compare to WC-6%Co. As the temperature increased, the corrosion rate for every material increased as expected. Decreasing in hardness value for both materials reveal that, the material’s hardness decrease after corrosion has attacked.

ATI X-751

Alloy Digest ◽  
2021 ◽  
Vol 70 (10) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Rupture Strength ◽  
High Strength ◽  
Heat Treating ◽  
Chromium Alloy ◽  
Creep Rupture Strength ◽  
Nickel Chromium ◽  
Oxidation And Corrosion ◽  
High Aluminum

Abstract ATI X-751 is a high-aluminum version of ATI X-750. It is a high-strength, precipitation hardenable, nickel-chromium alloy that employs nickel and titanium as the hardening elements. The alloy has good creep-rupture strength up to 815 °C (1500 °F), and excellent oxidation and corrosion resistance up to 980 °C (1800 °F). This datasheet provides information on composition, physical properties, and hardness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-776. Producer or source: ATI.

The Effect of Phosphorous on the Corrosion Resistance of Glassy Copper Zirconium Alloys

1983 ◽  
Vol 28 ◽  
Author(s):  
T.D. Burleigh ◽  
R.M. Latanision
Keyword(s):  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
Corrosion Rate ◽  
Zirconium Alloys ◽  
Amorphous Structure ◽  
Metal Alloys ◽  
Crystalline Defects ◽  
Zirconia Film ◽  
Melt Spun ◽  
Semiconductor Properties

ABSTRACTPhosphorous has been shown to have a beneficial effect on reducing the corrosion rate of various metal alloys. This research was undertaken to determine by what mechanism the phosphorous is able to improve the corrosion resistance of metals. The amorphous copper-zirconium system was chosen for experimentation because the amorphous structure eliminates the complications due to crystalline defects. The zirconium forms zirconia (ZrO2), which is normally a protective surface oxide. Copper-zirconium alloys with and without phosphorous were melt-spun, and were tested in various electrolytes. In comparing Cu-42Zr-2P with Cu-4OZr, the results show that the corrosion rate of Cu-42Zr-2P is lower in 1N sulfuric acid, and significantly lower in 3.5 w/o NaCl, and in 1N HCl. ESCA analysis shows that phosphorous is present in the zirconia film, and has a valence of +5. Photocurrent experiments suggest that phosphorous alters the semiconductor properties of the zirconia film.

NICKELVAC X-750

Alloy Digest ◽  
1990 ◽  
Vol 39 (10) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Rupture Strength ◽  
Heat Treating ◽  
Vacuum Arc ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Creep Rupture Strength ◽  
Temperature Performance ◽  
Oxidation And Corrosion

Abstract NICKEL VAC X-750 is a precipitation hardenable nickel-alloy with high creep-rupture strength up to 1500 F(816 C) and excellent oxidation and corrosion resistance up to 1800 F(982 C). It is produced by vacuum induction melting followed by either vacuum arc or electroslag remelting. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-386. Producer or source: Teledyne Allvac.

Effect of Sn Addition on the Corrosion Performance of Cast X-52 in H2S-Containing Environment at 60°C

2013 ◽  
Vol 743-744 ◽  
pp. 607-612 ◽  
Author(s):  
Hong Liang Lin ◽  
Jian Qiu Wang ◽  
En Hou Han
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Electrochemical Impedance ◽  
Corrosion Current ◽  
Corrosion Performance ◽  
Positive Role ◽  
Surface Corrosion ◽  
The Matrix ◽  
The Relationship ◽  
Small Content

The electrochemical behavior of cast X-52 with different Sn content ranging from 0 to 1 wt. % was investigated using the methods of potentiodynamic test, electrochemical impedance spectroscopy (EIS). The immersion tests involved to examine the relationship between Sn addition and corrosion performance of cast X-52. In addition, the morphology and the compositions of surface corrosion products were analyzed using scanning electron microscope (SEM)/ energy dispersive spectroscopy (EDS). Potentiodynamic polarization curves showed that the presence of Sn decreased the corrosion current density. EIS indicated that Sn-containing steels had higher polarization resistances. These results confirmed that Sn played a positive role in reducing corrosion rate in H2S-containing environment. However, the corrosion resistance decreased with increasing Sn addition. It was proved that Sn improved the corrosion resistance with only a small content and large amount of Sn might lead to an advance of the pit due to occurrence of more acidification. Moreover, a continuous inner O-rich layer adherent to the matrix was found for Sn-addition samples, which lead to a decrease of corrosion rate due to its compact characteristic, compared with porous sulfide formed on the outer surface.

KUBOTA HW

Alloy Digest ◽  
2007 ◽  
Vol 56 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Thermal Fatigue ◽  
Rupture Strength ◽  
Heat Treating ◽  
Creep Rupture Strength ◽  
Good Ductility ◽  
Temperature Performance

Abstract HW is a Ni-Fe-Cr alloy with moderate creep-rupture strength, good ductility, and an exceptional carburization resistance for service up to 1120 deg C (2050 deg F). The resistance of the alloy to thermal fatigue and shock make it particularly suited for furnace components operating in carburizing environments. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Ni-655. Producer or source: Kubota Metal Corporation, Fahramet Division.

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